Remove unused methods.

Do not force set DEBUG.

R=kasperl@chromium.org
BUG=
TEST=

Review URL: http://codereview.chromium.org/7171014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@8287 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/mark-compact.cc

@@ -869,18 +869,6 @@ class MarkingVisitor : public ObjectVisitor {
     StaticMarkingVisitor::VisitPointers(heap_, start, end);
   }
 
-  void VisitCodeTarget(Heap* heap, RelocInfo* rinfo) {
-    StaticMarkingVisitor::VisitCodeTarget(heap, rinfo);
-  }
-
-  void VisitGlobalPropertyCell(Heap* heap, RelocInfo* rinfo) {
-    StaticMarkingVisitor::VisitGlobalPropertyCell(heap, rinfo);
-  }
-
-  void VisitDebugTarget(Heap* heap, RelocInfo* rinfo) {
-    StaticMarkingVisitor::VisitDebugTarget(heap, rinfo);
-  }
-
  private:
   Heap* heap_;
 };

src/v8.h

-// Copyright 2006-2008 the V8 project authors. All rights reserved.
+// Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -35,13 +35,10 @@
 #if defined(GOOGLE3)
 // Google3 special flag handling.
 #if defined(DEBUG) && defined(NDEBUG)
-// If both are defined in Google3, then we are building an optimized v8 with
-// assertions enabled.
+// V8 only uses DEBUG and whenever it is set we are building a debug
+// version of V8. We do not use NDEBUG and simply undef it here for
+// consistency.
 #undef NDEBUG
-#elif !defined(DEBUG) && !defined(NDEBUG)
-// If neither is defined in Google3, then we are building a debug v8. Mark it
-// as such.
-#define DEBUG
 #endif
 #endif  // defined(GOOGLE3)